diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b40d45..9a787fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,19 @@ CalVer image tags (`stable-YYYY.MM.N`, `dev-YYYY.MM.N`) are produced for every C
 
 ## [Unreleased]
 
+## [0.38.1] — 2026-05-06
+
+### Internal
+- `CLAUDE.md` — `Claude Code marketplace endpoint` section now documents the
+  two-step fallback (system `git clone` + local `claude plugin marketplace
+  add`) for users registering manually against a private-CA Agnes instance.
+  Bun-compiled `claude` ignores the OS trust store and CA env vars on the
+  marketplace HTTPS path, so direct `/plugin marketplace add` over HTTPS can
+  fail with TLS errors on macOS / Windows even when system tools work fine.
+  The dashboard-served setup payload (`app/web/setup_instructions.py`)
+  already branches between the two automatically based on platform; the
+  doc snippet now matches that behavior for manual flows.
+
 ## [0.38.0] — 2026-05-06
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 40106fe..54d552e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "agnes-the-ai-analyst"
-version = "0.38.0"
+version = "0.38.1"
 description = "Agnes — AI Data Analyst platform for AI analytical systems"
 requires-python = ">=3.11,<3.14"
 license = "MIT"